I have the worst cold EVER!!! Reading: Chapter 5, sections 5, 6, 7 Mastering Chemistry Nomenclature lists 1, 2, 3,4 Quiz Friday Tutoring

Classification of Ions Below is a flow chart for the classification of ions.

Monoatomic Cations Metal atoms can lose valence electrons and become positively charged cations. Cations are named for the parent atom followed by the word “ion.” Na+ is named “sodium ion” Al3+ is named “aluminum ion”

Metals That Form Multiple Ions If a metal can form more than one cation, it is named for the parent, followed by the charge in Roman numerals in parentheses, followed by the word “ion.” Fe2+ is the iron(II) ion Fe3+ is the iron(III) ion

Monoatomic Anions Nonmetals can gain valence electrons and become negatively charged anions. Monoatomic anions are named by dropping the end of the element name and adding the suffix –ide. Br- is the bromide ion O2- is the oxide ion N3- is the nitride ion

Did you get it? Element Valence e- Ion charge Ion name Noble gas iodine 7 -1 iodide xenon aluminum 3 +3 aluminum ion neon phosphorus 5 -3 phosphide argon barium 2 +2 barium ion xenon

Summary of Ions (the letters) Monatomic ions Some charges can be predicted based on group number 2+ Be

Summary of Ions (the letters) Monatomic ions Some charges can be predicted based on group number Cation name is the same as element name with ion added element: zinc (Zn) ion: zinc ion (Zn2+) element: cesium (Cs) ion: cesium ion (Cs+) Anion name changes ending of element name to ide element: nitrogen (N) ion: nitride (N3-) element: iodine (I) ion: iodide (I-)

Summary of Ions (the letters) Poly atomic ion Poly: more than one or many atomic: atoms ion: a positively or negatively charged particle Almost always anions (two exceptions) ammonium -- NH4+ mercury (I) -- Hg22+

Summary of Ions (the letters) Variable Oxidation State metals Charge can NOT be predicted based on periodic table (ALMOST) ANYTHING IN HERE CAN BE A VOS

Summary of Ions (the letters) Variable Oxidation State metals Charge can NOT be predicted based on periodic table Can assume multiple ion charges non VOS metal – potassium ion = K+ VOS metal – lead ion = Pb2+ or Pb4+ The charge of VOS metals MUST be indicated in the name with the use of roman numerals Pb2+ = lead (II) ion Pb4+ = lead (IV) ion

Summary of Ions (the letters) Practice: Give the name of the ION of each of these elements rubidium oxygen cadmium carbon rubidium ion oxide cadmium ion carbide selenium phosphorus fluorine lithium selenide phosphide fluoride lithium ion

Summary of Ions (the letters) Practice: Give the name OR symbol for these ions: tin (II) ion S2- Fe3+ copper (I) ion Sn2+ sulfide iron (III) ion Cu+ Mg2+ bromide Mn4+ Ag+ magnesium ion Br- manganese (IV) ion silver ion

Na F

Na F

Na+ Na F F- sodium ion fluoride ion fluoride ion